Well, what are the options?
The classic "I'm better off than you think" with the multi-million dollar mansion or private yacht interior, or some tropical island backdrop, a classic.
The "joke", with the leopard casually napping on some furniture behind you, or, if animated, the dimensional portal in the next room, half visible through a half-open door.
The "bad taste" with the decapitated child near some fallen sharp object in the background, suggesting some gruesome household accident just happened, but you didn't notice it yet. Works better if the others know you have kids of that age.
The "definitely NSFW", with the SM dungeon backdrop. Even more credible if you dress accordingly and introduce with "Sorry, I had forgotten about this meeting..."
And of course a couple weaponized animated ones:
The "Sleep! I command you!" one with the subtle yet eye-catching animation which after a couple minutes will have everyone staring blankly at his screen, quietly drooling.
The "I definitely don't want to be in this meeting" one with the epilepsy-inducing strobe effect causing everyone to have a seizure, or at very least cry like a baby after a couple minutes. Might cause lawsuits and/or change of employer.